Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Preston, Maryland, United States Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Preston, Maryland, United States

2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
6th Aug 2025
70AQI
Lowest AQI recorded on
19th Aug 2025
16AQI

Same Day Analysis (11th August):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 41 of Good air quality on the same day.

Day & Night AQI Trend: 10th Aug - 11th Aug 2026

Preston, Maryland, United States

AQI
Day
Night
.

6 AM10th Aug 2026

8 PM

5 AM11th Aug 2026

Day time
Avg. Highest Time
1PM10th Aug

52AQI

Avg. Lowest Time
8PM10th Aug

38AQI

Night time
Avg. Highest Time
9PM10th Aug

38AQI

Avg. Lowest Time
4AM11th Aug

23AQI

In the last 24 hours,

Preston's AQI reached its highest point of 52 at 1 PM during the Day, while the lowest point, 23, was recorded at 4 AM during the Night between 10th Aug and 11th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Preston, Maryland, United States

JulAug
13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
13th Jul 2026286 AMAQI
13th Jul 2026297 AMAQI
13th Jul 2026328 AMAQI
13th Jul 2026289 AMAQI
13th Jul 20263610 AMAQI
13th Jul 20262811 AMAQI
13th Jul 20263612 PMAQI
13th Jul 2026361 PMAQI
13th Jul 2026302 PMAQI
13th Jul 2026303 PMAQI
13th Jul 2026344 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026346 PMAQI
13th Jul 2026297 PMAQI
13th Jul 2026268 PMAQI
13th Jul 2026289 PMAQI
13th Jul 20262710 PMAQI
13th Jul 20262411 PMAQI
14th Jul 20262212 AMAQI
14th Jul 2026211 AMAQI
14th Jul 2026222 AMAQI
14th Jul 2026263 AMAQI
14th Jul 2026304 AMAQI
14th Jul 2026265 AMAQI

24°C18/31°C

14th Jul 2026286 AMAQI
14th Jul 2026337 AMAQI
14th Jul 2026328 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20263710 AMAQI
14th Jul 20263711 AMAQI
14th Jul 20262612 PMAQI
14th Jul 2026281 PMAQI
14th Jul 2026322 PMAQI
14th Jul 2026313 PMAQI
14th Jul 2026344 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026336 PMAQI
14th Jul 2026327 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026319 PMAQI
14th Jul 20262610 PMAQI
14th Jul 20262311 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026211 AMAQI
15th Jul 2026202 AMAQI
15th Jul 2026263 AMAQI
15th Jul 2026284 AMAQI
15th Jul 2026285 AMAQI

25°C17/33°C

15th Jul 2026296 AMAQI
15th Jul 2026307 AMAQI
15th Jul 2026248 AMAQI
15th Jul 2026309 AMAQI
15th Jul 20262410 AMAQI
15th Jul 20261811 AMAQI
15th Jul 20262012 PMAQI
15th Jul 2026201 PMAQI
15th Jul 2026222 PMAQI
15th Jul 2026303 PMAQI
15th Jul 2026204 PMAQI
15th Jul 2026225 PMAQI
15th Jul 2026226 PMAQI
15th Jul 2026227 PMAQI
15th Jul 2026228 PMAQI
15th Jul 2026329 PMAQI
15th Jul 20262110 PMAQI
15th Jul 20262111 PMAQI
16th Jul 20263212 AMAQI
16th Jul 2026191 AMAQI
16th Jul 2026162 AMAQI
16th Jul 2026173 AMAQI
16th Jul 2026184 AMAQI
16th Jul 2026205 AMAQI

29°C22/36°C

16th Jul 2026206 AMAQI
16th Jul 2026187 AMAQI
16th Jul 2026208 AMAQI
16th Jul 2026209 AMAQI
16th Jul 20262210 AMAQI
16th Jul 20263211 AMAQI
16th Jul 20264212 PMAQI
16th Jul 2026461 PMAQI
16th Jul 2026382 PMAQI
16th Jul 2026543 PMAQI
16th Jul 2026464 PMAQI
16th Jul 2026245 PMAQI
16th Jul 2026236 PMAQI
16th Jul 2026467 PMAQI
16th Jul 2026368 PMAQI
16th Jul 2026359 PMAQI
16th Jul 20263610 PMAQI
16th Jul 20263811 PMAQI
17th Jul 20263912 AMAQI
17th Jul 2026581 AMAQI
17th Jul 2026602 AMAQI
17th Jul 2026483 AMAQI
17th Jul 2026604 AMAQI
17th Jul 20261565 AMAQI

30°C24/36°C

17th Jul 20261746 AMAQI
17th Jul 20261807 AMAQI
17th Jul 20261838 AMAQI
17th Jul 20261769 AMAQI
17th Jul 202618010 AMAQI
17th Jul 202617811 AMAQI
17th Jul 202617012 PMAQI
17th Jul 20261651 PMAQI
17th Jul 20261622 PMAQI
17th Jul 20261603 PMAQI
17th Jul 20261584 PMAQI
17th Jul 20261595 PMAQI
17th Jul 20261616 PMAQI
17th Jul 20261587 PMAQI
17th Jul 20261528 PMAQI
17th Jul 20261559 PMAQI
17th Jul 202615610 PMAQI
17th Jul 202615611 PMAQI
18th Jul 202616112 AMAQI
18th Jul 20261601 AMAQI
18th Jul 20261562 AMAQI
18th Jul 20261583 AMAQI
18th Jul 20261564 AMAQI
18th Jul 20261605 AMAQI

27°C23/32°C

18th Jul 20261596 AMAQI
18th Jul 20261567 AMAQI
18th Jul 20261568 AMAQI
18th Jul 20261549 AMAQI
18th Jul 202615810 AMAQI
18th Jul 202615211 AMAQI
18th Jul 202611212 PMAQI
18th Jul 2026901 PMAQI
18th Jul 2026662 PMAQI
18th Jul 2026623 PMAQI
18th Jul 2026594 PMAQI
18th Jul 2026575 PMAQI
18th Jul 2026556 PMAQI
18th Jul 2026547 PMAQI
18th Jul 2026468 PMAQI
18th Jul 2026429 PMAQI
18th Jul 20264410 PMAQI
18th Jul 20263411 PMAQI
19th Jul 20264212 AMAQI
19th Jul 2026461 AMAQI
19th Jul 2026562 AMAQI
19th Jul 2026363 AMAQI
19th Jul 2026384 AMAQI
19th Jul 2026235 AMAQI

27°C21/36°C

19th Jul 2026306 AMAQI
19th Jul 2026567 AMAQI
19th Jul 2026288 AMAQI
19th Jul 2026449 AMAQI
19th Jul 20264610 AMAQI
19th Jul 20264011 AMAQI
19th Jul 20265012 PMAQI
19th Jul 2026591 PMAQI
19th Jul 2026732 PMAQI
19th Jul 2026743 PMAQI
19th Jul 2026744 PMAQI
19th Jul 2026745 PMAQI
19th Jul 2026826 PMAQI
19th Jul 2026787 PMAQI
19th Jul 2026808 PMAQI
19th Jul 2026719 PMAQI
19th Jul 20267110 PMAQI
19th Jul 20266611 PMAQI
20th Jul 20266612 AMAQI
20th Jul 2026621 AMAQI
20th Jul 2026582 AMAQI
20th Jul 2026553 AMAQI
20th Jul 2026594 AMAQI
20th Jul 2026605 AMAQI

26°C23/31°C

20th Jul 2026586 AMAQI
20th Jul 2026557 AMAQI
20th Jul 2026548 AMAQI
20th Jul 2026519 AMAQI
20th Jul 20265210 AMAQI
20th Jul 20264611 AMAQI
20th Jul 20265612 PMAQI
20th Jul 2026421 PMAQI
20th Jul 2026522 PMAQI
20th Jul 2026523 PMAQI
20th Jul 2026564 PMAQI
20th Jul 2026555 PMAQI
20th Jul 2026586 PMAQI
20th Jul 2026557 PMAQI
20th Jul 2026568 PMAQI
20th Jul 2026599 PMAQI
20th Jul 20265710 PMAQI
21st Jul 20265712 AMAQI
21st Jul 2026581 AMAQI
21st Jul 2026632 AMAQI
21st Jul 2026603 AMAQI
21st Jul 2026554 AMAQI
21st Jul 2026465 AMAQI

24°C18/31°C

21st Jul 2026426 AMAQI
21st Jul 2026507 AMAQI
21st Jul 2026178 AMAQI
21st Jul 2026489 AMAQI
21st Jul 20264410 AMAQI
21st Jul 20264811 AMAQI
21st Jul 20263712 PMAQI
21st Jul 2026401 PMAQI
21st Jul 2026422 PMAQI
21st Jul 2026273 PMAQI
21st Jul 2026294 PMAQI
21st Jul 2026315 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026127 PMAQI
21st Jul 2026318 PMAQI
21st Jul 202689 PMAQI
21st Jul 20263310 PMAQI
21st Jul 20262611 PMAQI
22nd Jul 20261712 AMAQI
22nd Jul 2026231 AMAQI
22nd Jul 202682 AMAQI
22nd Jul 2026543 AMAQI
22nd Jul 202684 AMAQI
22nd Jul 2026565 AMAQI

26°C22/33°C

22nd Jul 2026566 AMAQI
22nd Jul 202687 AMAQI
22nd Jul 2026258 AMAQI
22nd Jul 2026349 AMAQI
22nd Jul 20262310 AMAQI
22nd Jul 20262511 AMAQI
22nd Jul 20262112 PMAQI
22nd Jul 2026251 PMAQI
22nd Jul 2026422 PMAQI
22nd Jul 2026333 PMAQI
22nd Jul 2026384 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026366 PMAQI
22nd Jul 2026367 PMAQI
22nd Jul 2026318 PMAQI
22nd Jul 2026369 PMAQI
22nd Jul 20263310 PMAQI
22nd Jul 20262511 PMAQI
23rd Jul 20262912 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026252 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026234 AMAQI
23rd Jul 2026255 AMAQI

26°C23/32°C

23rd Jul 2026216 AMAQI
23rd Jul 2026217 AMAQI
23rd Jul 2026258 AMAQI
23rd Jul 2026259 AMAQI
23rd Jul 20262710 AMAQI
23rd Jul 20262411 AMAQI
23rd Jul 20263312 PMAQI
23rd Jul 2026201 PMAQI
23rd Jul 2026452 PMAQI
23rd Jul 2026163 PMAQI
23rd Jul 2026184 PMAQI
23rd Jul 2026335 PMAQI
23rd Jul 2026256 PMAQI
23rd Jul 2026207 PMAQI
23rd Jul 2026328 PMAQI
23rd Jul 2026299 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20263311 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026211 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026233 AMAQI
24th Jul 2026424 AMAQI
24th Jul 2026345 AMAQI

23°C19/28°C

24th Jul 2026426 AMAQI
24th Jul 2026387 AMAQI
24th Jul 2026288 AMAQI
24th Jul 2026259 AMAQI
24th Jul 20263310 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20263312 PMAQI
24th Jul 2026261 PMAQI
24th Jul 2026172 PMAQI
24th Jul 2026333 PMAQI
24th Jul 2026274 PMAQI
24th Jul 2026295 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026387 PMAQI
24th Jul 2026288 PMAQI
24th Jul 2026269 PMAQI
24th Jul 20262310 PMAQI
24th Jul 20265211 PMAQI
25th Jul 20263212 AMAQI
25th Jul 2026251 AMAQI
25th Jul 2026212 AMAQI
25th Jul 2026293 AMAQI
25th Jul 2026294 AMAQI
25th Jul 2026295 AMAQI

22°C16/29°C

25th Jul 2026386 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026168 AMAQI
25th Jul 2026259 AMAQI
25th Jul 20261810 AMAQI
25th Jul 20263311 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026501 PMAQI
25th Jul 2026362 PMAQI
25th Jul 2026253 PMAQI
25th Jul 2026164 PMAQI
25th Jul 2026225 PMAQI
25th Jul 2026206 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026279 PMAQI
25th Jul 20262610 PMAQI
25th Jul 20262511 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026341 AMAQI
26th Jul 2026382 AMAQI
26th Jul 2026323 AMAQI
26th Jul 2026304 AMAQI
26th Jul 2026335 AMAQI

22°C18/27°C

26th Jul 2026346 AMAQI
26th Jul 2026337 AMAQI
26th Jul 2026368 AMAQI
26th Jul 2026349 AMAQI
26th Jul 20263410 AMAQI
26th Jul 20262211 AMAQI
26th Jul 20263612 PMAQI
26th Jul 2026361 PMAQI
26th Jul 2026272 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026314 PMAQI
26th Jul 2026405 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026369 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20263211 PMAQI
27th Jul 20265012 AMAQI
27th Jul 2026331 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026253 AMAQI
27th Jul 2026324 AMAQI
27th Jul 2026345 AMAQI

23°C17/29°C

27th Jul 2026296 AMAQI
27th Jul 2026347 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026369 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20262211 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026361 PMAQI
27th Jul 2026382 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026404 PMAQI
27th Jul 2026405 PMAQI
27th Jul 2026246 PMAQI
27th Jul 2026467 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026449 PMAQI
27th Jul 20264010 PMAQI
27th Jul 20264211 PMAQI
28th Jul 20264012 AMAQI
28th Jul 2026451 AMAQI
28th Jul 2026422 AMAQI
28th Jul 2026423 AMAQI
28th Jul 2026404 AMAQI
28th Jul 2026365 AMAQI

24°C20/30°C

28th Jul 2026446 AMAQI
28th Jul 2026477 AMAQI
28th Jul 2026478 AMAQI
28th Jul 2026409 AMAQI
28th Jul 20264710 AMAQI
28th Jul 20264011 AMAQI
28th Jul 20264512 PMAQI
28th Jul 2026421 PMAQI
28th Jul 2026422 PMAQI
28th Jul 2026463 PMAQI
28th Jul 2026494 PMAQI
28th Jul 2026485 PMAQI
28th Jul 2026506 PMAQI
28th Jul 2026487 PMAQI
28th Jul 2026468 PMAQI
28th Jul 2026409 PMAQI
28th Jul 20263010 PMAQI
28th Jul 20264411 PMAQI
29th Jul 20263212 AMAQI
29th Jul 2026421 AMAQI
29th Jul 2026402 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026344 AMAQI
29th Jul 2026365 AMAQI

25°C22/31°C

29th Jul 2026366 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026408 AMAQI
29th Jul 2026329 AMAQI
29th Jul 20262210 AMAQI
29th Jul 20262311 AMAQI
29th Jul 20263612 PMAQI
29th Jul 2026381 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026463 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026345 PMAQI
29th Jul 2026256 PMAQI
29th Jul 2026297 PMAQI
29th Jul 2026348 PMAQI
29th Jul 2026309 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20262911 PMAQI
30th Jul 20264012 AMAQI
30th Jul 2026331 AMAQI
30th Jul 2026382 AMAQI
30th Jul 2026173 AMAQI
30th Jul 2026144 AMAQI
30th Jul 2026255 AMAQI

23°C19/29°C

30th Jul 2026246 AMAQI
30th Jul 2026267 AMAQI
30th Jul 2026268 AMAQI
30th Jul 2026299 AMAQI
30th Jul 20262510 AMAQI
30th Jul 20263311 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026221 PMAQI
30th Jul 2026122 PMAQI
30th Jul 2026163 PMAQI
30th Jul 2026234 PMAQI
30th Jul 2026185 PMAQI
30th Jul 2026206 PMAQI
30th Jul 2026227 PMAQI
30th Jul 2026228 PMAQI
30th Jul 2026169 PMAQI
30th Jul 20262710 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20262512 AMAQI
31st Jul 2026181 AMAQI
31st Jul 2026122 AMAQI
31st Jul 2026263 AMAQI
31st Jul 2026254 AMAQI
31st Jul 2026185 AMAQI

24°C19/29°C

31st Jul 2026276 AMAQI
31st Jul 2026217 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026229 AMAQI
31st Jul 20261910 AMAQI
31st Jul 20262511 AMAQI
31st Jul 20264612 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026254 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026237 PMAQI
31st Jul 2026328 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20262910 PMAQI
31st Jul 20263411 PMAQI
1st Aug 20264012 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026362 AMAQI
1st Aug 2026363 AMAQI
1st Aug 2026344 AMAQI
1st Aug 2026345 AMAQI

25°C19/30°C

1st Aug 2026386 AMAQI
1st Aug 2026317 AMAQI
1st Aug 2026388 AMAQI
1st Aug 2026369 AMAQI
1st Aug 20263210 AMAQI
1st Aug 20263211 AMAQI
1st Aug 20264412 PMAQI
1st Aug 2026361 PMAQI
1st Aug 2026342 PMAQI
1st Aug 2026363 PMAQI
1st Aug 2026404 PMAQI
1st Aug 2026405 PMAQI
1st Aug 2026406 PMAQI
1st Aug 2026407 PMAQI
1st Aug 2026408 PMAQI
1st Aug 2026389 PMAQI
1st Aug 20264410 PMAQI
1st Aug 20264011 PMAQI
2nd Aug 20263812 AMAQI
2nd Aug 2026291 AMAQI
2nd Aug 2026272 AMAQI
2nd Aug 2026403 AMAQI
2nd Aug 2026424 AMAQI
2nd Aug 2026385 AMAQI

26°C20/33°C

2nd Aug 2026386 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026389 AMAQI
2nd Aug 20263410 AMAQI
2nd Aug 20262911 AMAQI
2nd Aug 20263612 PMAQI
2nd Aug 2026401 PMAQI
2nd Aug 2026422 PMAQI
2nd Aug 2026403 PMAQI
2nd Aug 2026384 PMAQI
2nd Aug 2026385 PMAQI
2nd Aug 2026346 PMAQI
2nd Aug 2026367 PMAQI
2nd Aug 2026328 PMAQI
2nd Aug 2026259 PMAQI
2nd Aug 20263110 PMAQI
2nd Aug 20262511 PMAQI
3rd Aug 20262912 AMAQI
3rd Aug 2026341 AMAQI
3rd Aug 2026252 AMAQI
3rd Aug 2026273 AMAQI
3rd Aug 2026324 AMAQI
3rd Aug 2026325 AMAQI

28°C23/34°C

3rd Aug 2026386 AMAQI
3rd Aug 2026367 AMAQI
3rd Aug 2026388 AMAQI
3rd Aug 2026389 AMAQI
3rd Aug 20263810 AMAQI
3rd Aug 20263411 AMAQI
3rd Aug 20263612 PMAQI
3rd Aug 2026381 PMAQI
3rd Aug 2026362 PMAQI
3rd Aug 2026383 PMAQI
3rd Aug 2026364 PMAQI
3rd Aug 2026225 PMAQI
3rd Aug 2026386 PMAQI
3rd Aug 2026387 PMAQI
3rd Aug 2026448 PMAQI
3rd Aug 2026529 PMAQI
3rd Aug 20264010 PMAQI
3rd Aug 20263411 PMAQI
4th Aug 20263412 AMAQI
4th Aug 2026341 AMAQI
4th Aug 2026342 AMAQI
4th Aug 2026363 AMAQI
4th Aug 2026184 AMAQI
4th Aug 2026215 AMAQI

26°C25/29°C

4th Aug 2026246 AMAQI
4th Aug 2026167 AMAQI
4th Aug 2026248 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20262610 AMAQI
4th Aug 20263611 AMAQI
4th Aug 20262812 PMAQI
4th Aug 2026221 PMAQI
4th Aug 2026282 PMAQI
4th Aug 2026463 PMAQI
4th Aug 2026314 PMAQI
4th Aug 2026305 PMAQI
4th Aug 2026326 PMAQI
4th Aug 2026387 PMAQI
4th Aug 2026228 PMAQI
4th Aug 2026269 PMAQI
4th Aug 20262810 PMAQI
4th Aug 20264011 PMAQI
5th Aug 20264912 AMAQI
5th Aug 2026331 AMAQI
5th Aug 2026342 AMAQI
5th Aug 2026243 AMAQI
5th Aug 2026274 AMAQI
5th Aug 2026465 AMAQI

26°C21/32°C

5th Aug 2026466 AMAQI
5th Aug 2026407 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026429 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262111 AMAQI
5th Aug 20261812 PMAQI
5th Aug 2026331 PMAQI
5th Aug 2026212 PMAQI
5th Aug 2026423 PMAQI
5th Aug 2026294 PMAQI
5th Aug 2026295 PMAQI
5th Aug 2026296 PMAQI
5th Aug 2026267 PMAQI
5th Aug 2026268 PMAQI
5th Aug 2026269 PMAQI
5th Aug 20262410 PMAQI
5th Aug 20262211 PMAQI
6th Aug 20262212 AMAQI
6th Aug 2026381 AMAQI
6th Aug 2026462 AMAQI
6th Aug 2026253 AMAQI
6th Aug 2026504 AMAQI
6th Aug 2026325 AMAQI

27°C23/32°C

6th Aug 2026466 AMAQI
6th Aug 2026407 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026429 AMAQI
6th Aug 20265210 AMAQI
6th Aug 20264711 AMAQI
6th Aug 20263612 PMAQI
6th Aug 2026361 PMAQI
6th Aug 2026422 PMAQI
6th Aug 2026383 PMAQI
6th Aug 2026384 PMAQI
6th Aug 2026295 PMAQI
6th Aug 2026346 PMAQI
6th Aug 2026237 PMAQI
6th Aug 2026368 PMAQI
6th Aug 2026429 PMAQI
6th Aug 20263310 PMAQI
6th Aug 20265211 PMAQI
7th Aug 20263712 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026232 AMAQI
7th Aug 2026293 AMAQI
7th Aug 2026364 AMAQI
7th Aug 2026255 AMAQI

29°C25/34°C

7th Aug 2026256 AMAQI
7th Aug 2026277 AMAQI
7th Aug 2026258 AMAQI
7th Aug 2026239 AMAQI
7th Aug 20262810 AMAQI
7th Aug 20262611 AMAQI
7th Aug 20263012 PMAQI
7th Aug 2026251 PMAQI
7th Aug 2026332 PMAQI
7th Aug 2026303 PMAQI
7th Aug 2026294 PMAQI
7th Aug 2026265 PMAQI
7th Aug 2026266 PMAQI
7th Aug 2026337 PMAQI
7th Aug 2026328 PMAQI
7th Aug 2026299 PMAQI
7th Aug 20264210 PMAQI
7th Aug 20264611 PMAQI
8th Aug 20262912 AMAQI
8th Aug 2026381 AMAQI
8th Aug 2026342 AMAQI
8th Aug 2026293 AMAQI
8th Aug 2026424 AMAQI
8th Aug 2026265 AMAQI

29°C24/36°C

8th Aug 2026256 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026258 AMAQI
8th Aug 2026389 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20262611 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026241 PMAQI
8th Aug 2026282 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026384 PMAQI
8th Aug 2026425 PMAQI
8th Aug 2026336 PMAQI
8th Aug 2026267 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262210 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262312 AMAQI
9th Aug 2026251 AMAQI
9th Aug 2026252 AMAQI
9th Aug 2026263 AMAQI
9th Aug 2026274 AMAQI
9th Aug 2026335 AMAQI

29°C24/36°C

9th Aug 2026276 AMAQI
9th Aug 2026337 AMAQI
9th Aug 2026308 AMAQI
9th Aug 2026309 AMAQI
9th Aug 20263410 AMAQI
9th Aug 20262911 AMAQI
9th Aug 20262312 PMAQI
9th Aug 2026291 PMAQI
9th Aug 2026342 PMAQI
9th Aug 2026343 PMAQI
9th Aug 2026384 PMAQI
9th Aug 2026405 PMAQI
9th Aug 2026426 PMAQI
9th Aug 2026427 PMAQI
9th Aug 2026428 PMAQI
9th Aug 2026449 PMAQI
9th Aug 20264410 PMAQI
9th Aug 20264211 PMAQI
10th Aug 20264912 AMAQI
10th Aug 2026461 AMAQI
10th Aug 2026442 AMAQI
10th Aug 2026463 AMAQI
10th Aug 2026444 AMAQI
10th Aug 2026465 AMAQI

29°C24/35°C

10th Aug 2026466 AMAQI
10th Aug 2026467 AMAQI
10th Aug 2026448 AMAQI
10th Aug 2026429 AMAQI
10th Aug 20264610 AMAQI
10th Aug 20264011 AMAQI
10th Aug 20264612 PMAQI
10th Aug 2026521 PMAQI
10th Aug 2026512 PMAQI
10th Aug 2026523 PMAQI
10th Aug 2026484 PMAQI
10th Aug 2026525 PMAQI
10th Aug 2026526 PMAQI
10th Aug 2026517 PMAQI
10th Aug 2026388 PMAQI
10th Aug 2026389 PMAQI
10th Aug 20262510 PMAQI
10th Aug 20262411 PMAQI
11th Aug 20263312 AMAQI
11th Aug 2026291 AMAQI
11th Aug 2026302 AMAQI
11th Aug 2026253 AMAQI
11th Aug 2026234 AMAQI
11th Aug 2026295 AMAQI

28°C23/36°C

11th Aug 2026296 AMAQI
6 AM
11th Aug 2026257 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026249 AMAQI
11th Aug 20262910 AMAQI
11th Aug 20263011 AMAQI
11th Aug 20263612 PMAQI
11th Aug 2026401 PMAQI
1 PM
11th Aug 2026522 PMAQI
11th Aug 2026583 PMAQI
11th Aug 2026554 PMAQI
11th Aug 2026565 PMAQI
11th Aug 2026586 PMAQI
11th Aug 2026557 PMAQI
11th Aug 2026598 PMAQI
8 PM
11th Aug 2026579 PMAQI
11th Aug 20265710 PMAQI
11th Aug 20265611 PMAQI
1 AM
5 AM

26°C21/33°C

Day time
Avg. Highest Time
6 AM - 7 AM

43AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
8 AM

40AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 43), while the lowest AQI was between 8 AM to 8 AM (Avg. 40).
Night time
Avg. Highest Time
5 AM

41AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM - 4 AM

38AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 41), while the lowest AQI was between 12 AM to 4 AM (Avg. 38).

2026 Days Vs Air Quality

Preston, Maryland, United States

2026

96%

211

3%

7

0.9%

2

Total number of days with different AQI categories in last 223 days in 2026 (142 days remaining)

Good
211 Days
Moderate
7 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 96%

Health Risk Level:

Very Low

In 2026, 96% of 223 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Preston, Maryland, United States

AQI levels in 2026

AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
17AQI (US)
2nd January 2026
25AQI (US)
3rd January 2026
41AQI (US)
4th January 2026
54AQI (US)
5th January 2026
41AQI (US)
6th January 2026
45AQI (US)
7th January 2026
42AQI (US)
8th January 2026
35AQI (US)
9th January 2026
37AQI (US)
10th January 2026
40AQI (US)
11th January 2026
19AQI (US)
12th January 2026
21AQI (US)
13th January 2026
19AQI (US)
14th January 2026
39AQI (US)
15th January 2026
24AQI (US)
16th January 2026
14AQI (US)
17th January 2026
29AQI (US)
18th January 2026
54AQI (US)
19th January 2026
32AQI (US)
20th January 2026
20AQI (US)
21st January 2026
26AQI (US)
22nd January 2026
35AQI (US)
23rd January 2026
31AQI (US)
24th January 2026
47AQI (US)
25th January 2026
49AQI (US)
26th January 2026
32AQI (US)
27th January 2026
37AQI (US)
28th January 2026
20AQI (US)
29th January 2026
35AQI (US)
30th January 2026
47AQI (US)
31st January 2026
44AQI (US)
1st February 2026
46AQI (US)
2nd February 2026
48AQI (US)
3rd February 2026
25AQI (US)
4th February 2026
24AQI (US)
5th February 2026
36AQI (US)
6th February 2026
31AQI (US)
7th February 2026
28AQI (US)
8th February 2026
48AQI (US)
9th February 2026
43AQI (US)
10th February 2026
24AQI (US)
11th February 2026
27AQI (US)
12th February 2026
47AQI (US)
13th February 2026
43AQI (US)
14th February 2026
24AQI (US)
15th February 2026
35AQI (US)
16th February 2026
32AQI (US)
17th February 2026
26AQI (US)
18th February 2026
32AQI (US)
19th February 2026
33AQI (US)
20th February 2026
44AQI (US)
21st February 2026
37AQI (US)
22nd February 2026
30AQI (US)
23rd February 2026
42AQI (US)
24th February 2026
44AQI (US)
25th February 2026
35AQI (US)
26th February 2026
28AQI (US)
27th February 2026
20AQI (US)
28th February 2026
23AQI (US)
1st March 2026
26AQI (US)
2nd March 2026
53AQI (US)
3rd March 2026
42AQI (US)
4th March 2026
24AQI (US)
5th March 2026
22AQI (US)
6th March 2026
30AQI (US)
7th March 2026
36AQI (US)
8th March 2026
33AQI (US)
9th March 2026
38AQI (US)
10th March 2026
30AQI (US)
11th March 2026
26AQI (US)
12th March 2026
31AQI (US)
13th March 2026
38AQI (US)
14th March 2026
36AQI (US)
15th March 2026
32AQI (US)
16th March 2026
36AQI (US)
17th March 2026
36AQI (US)
18th March 2026
32AQI (US)
19th March 2026
30AQI (US)
20th March 2026
31AQI (US)
21st March 2026
20AQI (US)
22nd March 2026
20AQI (US)
23rd March 2026
27AQI (US)
24th March 2026
32AQI (US)
25th March 2026
29AQI (US)
26th March 2026
28AQI (US)
27th March 2026
32AQI (US)
28th March 2026
33AQI (US)
29th March 2026
26AQI (US)
30th March 2026
20AQI (US)
31st March 2026
18AQI (US)
1st April 2026
23AQI (US)
2nd April 2026
31AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
27AQI (US)
5th April 2026
29AQI (US)
6th April 2026
29AQI (US)
7th April 2026
29AQI (US)
8th April 2026
38AQI (US)
9th April 2026
28AQI (US)
10th April 2026
26AQI (US)
11th April 2026
28AQI (US)
12th April 2026
30AQI (US)
13th April 2026
26AQI (US)
14th April 2026
16AQI (US)
15th April 2026
18AQI (US)
16th April 2026
20AQI (US)
17th April 2026
18th April 2026
22AQI (US)
19th April 2026
33AQI (US)
20th April 2026
32AQI (US)
21st April 2026
27AQI (US)
22nd April 2026
23rd April 2026
15AQI (US)
24th April 2026
14AQI (US)
25th April 2026
32AQI (US)
26th April 2026
34AQI (US)
27th April 2026
30AQI (US)
28th April 2026
26AQI (US)
29th April 2026
26AQI (US)
30th April 2026
28AQI (US)
1st May 2026
29AQI (US)
2nd May 2026
25AQI (US)
3rd May 2026
22AQI (US)
4th May 2026
29AQI (US)
5th May 2026
29AQI (US)
6th May 2026
32AQI (US)
7th May 2026
29AQI (US)
8th May 2026
29AQI (US)
9th May 2026
10th May 2026
26AQI (US)
11th May 2026
27AQI (US)
12th May 2026
35AQI (US)
13th May 2026
29AQI (US)
14th May 2026
30AQI (US)
15th May 2026
45AQI (US)
16th May 2026
44AQI (US)
17th May 2026
44AQI (US)
18th May 2026
52AQI (US)
19th May 2026
49AQI (US)
20th May 2026
44AQI (US)
21st May 2026
41AQI (US)
22nd May 2026
43AQI (US)
23rd May 2026
50AQI (US)
24th May 2026
43AQI (US)
25th May 2026
42AQI (US)
26th May 2026
28AQI (US)
27th May 2026
26AQI (US)
28th May 2026
20AQI (US)
29th May 2026
17AQI (US)
30th May 2026
21AQI (US)
31st May 2026
25AQI (US)
1st June 2026
27AQI (US)
2nd June 2026
25AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
23AQI (US)
5th June 2026
27AQI (US)
6th June 2026
25AQI (US)
7th June 2026
24AQI (US)
8th June 2026
22AQI (US)
9th June 2026
21AQI (US)
10th June 2026
27AQI (US)
11th June 2026
26AQI (US)
12th June 2026
26AQI (US)
13th June 2026
22AQI (US)
14th June 2026
24AQI (US)
15th June 2026
23AQI (US)
16th June 2026
26AQI (US)
17th June 2026
27AQI (US)
18th June 2026
25AQI (US)
19th June 2026
23AQI (US)
20th June 2026
23AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
20AQI (US)
24th June 2026
21AQI (US)
25th June 2026
16AQI (US)
26th June 2026
23AQI (US)
27th June 2026
24AQI (US)
28th June 2026
23AQI (US)
29th June 2026
25AQI (US)
30th June 2026
24AQI (US)
1st July 2026
26AQI (US)
2nd July 2026
46AQI (US)
3rd July 2026
55AQI (US)
4th July 2026
39AQI (US)
5th July 2026
31AQI (US)
6th July 2026
27AQI (US)
7th July 2026
27AQI (US)
8th July 2026
21AQI (US)
9th July 2026
26AQI (US)
10th July 2026
32AQI (US)
11th July 2026
29AQI (US)
12th July 2026
29AQI (US)
13th July 2026
29AQI (US)
14th July 2026
29AQI (US)
15th July 2026
24AQI (US)
16th July 2026
30AQI (US)
17th July 2026
142AQI (US)
18th July 2026
109AQI (US)
19th July 2026
56AQI (US)
20th July 2026
55AQI (US)
21st July 2026
39AQI (US)
22nd July 2026
30AQI (US)
23rd July 2026
26AQI (US)
24th July 2026
30AQI (US)
25th July 2026
27AQI (US)
26th July 2026
31AQI (US)
27th July 2026
35AQI (US)
28th July 2026
43AQI (US)
29th July 2026
33AQI (US)
30th July 2026
24AQI (US)
31st July 2026
26AQI (US)
1st August 2026
38AQI (US)
2nd August 2026
35AQI (US)
3rd August 2026
36AQI (US)
4th August 2026
29AQI (US)
5th August 2026
31AQI (US)
6th August 2026
38AQI (US)
7th August 2026
30AQI (US)
8th August 2026
28AQI (US)
9th August 2026
33AQI (US)
10th August 2026
44AQI (US)
11th August 2026
41AQI (US)
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

34AQI (US)

34AQI (US)

31AQI (US)

27AQI (US)

34AQI (US)

23AQI (US)

39AQI (US)

35AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202632AQI (US)

29
2
28
30
1
28
29
1
30
26
3
2
11
211
7
2

Highest AQI (US) recorded in

July

39AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202533AQI (US)

4
1
30
31
22
8
26
5
28
3
30
31
25
5
26
5
253
27

Highest AQI (US) recorded in

June

41AQI (US)

Lowest AQI (US) recorded in

May

26AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2025(Avg.)
33AQI (US)
Least Polluted Year Recorded
2026(Avg.)
32AQI (US)

Preston's annual 2026 AQI (US) (32) shows an average percentage change of -3.03% (improved AQI (US)) compared to previous years: 2025 (33).